CVE-2026-44931 malcontent: Disk Space Exhaustion via Globally Accessible D-Bus API
An attacker can exhaust disk space via a globally accessible D-Bus API in malcontent, causing denial of service on Linux systems.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-44931?
CVE-2026-44931 is a medium-severity denial of service vulnerability in gnome malcontent, published on 13 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The newly introduced RecordUsage D-Bus method https://gitlab.freedesktop.org/pwithnall/malcontent/-/blob/0.14.0/libmalcontent-timer/child-timer-service.c in malcontent-timerd allows arbitrary users in the system to slowly fill up disk space in /var/lib/malcontent-timerd
Weakness: CWE-770
Which versions are affected by CVE-2026-44931?
How do I fix CVE-2026-44931?
No fix has been published for CVE-2026-44931 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-44931 being exploited?
There is no known exploitation of CVE-2026-44931 in the wild and no public exploit code.
Sources
Also known as GHSA-9jrh-5pwj-wfmp, UBUNTU-CVE-2026-44931.